Expanded Perlite Coarse 3-5mm 5-8mm Made in Iran
Iranian expanded perlite coarse grade, available in 3–5 mm and 5–8 mm particle sizes, is a lightweight, fire-resistant, and thermally insulating material produced by expanding raw perlite ore at approximately 1,100°C. With a density of 0.08–0.12 g/cm³ and excellent thermal and acoustic insulation properties, it is widely used in lightweight concrete, insulating plaster, loose-fill insulation, fireproofing, and horticulture. The coarse particle size provides superior drainage and aeration in growing media and enhanced insulation performance in construction.
The Supply Chain Department at Sahi Rasa Company supplies Iranian expanded perlite coarse grade for export to Afghanistan, Iraq, the Kurdistan Region, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria. Whether for lightweight concrete, insulating plaster, loose-fill insulation, or horticultural substrates, the department ensures reliable supply, competitive pricing, and comprehensive logistics support.
1. Introduction to the Supply Chain Department at Sahi Rasa Company
The Supply Chain Department at Sahi Rasa Company has established itself as a reliable exporter of expanded perlite coarse grade, a material that plays a critical role in lightweight construction and horticulture. The department's approach to coarse perlite is grounded in an understanding of the specific requirements of these applications: a lightweight concrete producer in Turkey needs perlite with consistent density and particle size to achieve predictable compressive strength; a horticultural grower in Iraq needs perlite with high porosity and drainage to support healthy root growth; a fireproofing contractor in Uzbekistan needs perlite that meets fire rating requirements. The department tailors its supply to meet these diverse needs.
The department sources raw perlite ore from Iranian deposits known for their high silica content and consistent expansion characteristics. The ore is expanded at approximately 1,100°C and then classified into coarse grades of 3–5 mm and 5–8 mm. The resulting product is tested for density, particle size distribution, thermal conductivity, and fire resistance.
For clients in Afghanistan, the Kurdistan Region, Iraq, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria, the Supply Chain Department at Sahi Rasa Company offers a reliable supply of coarse expanded perlite in the grade and packaging that best suits their needs. The department's logistics team optimizes shipping to accommodate the low density of the material, ensuring cost-effective delivery.
2. Product Overview
Expanded perlite coarse grade is a lightweight, porous material produced by heating raw perlite ore to approximately 1,100°C. The expansion process creates a cellular structure with a density of 0.08–0.12 g/cm³, making it one of the lightest mineral materials available. The material is inorganic, non-combustible, and chemically inert, with a pH of 7.01–7.02.
Coarse-grade perlite is available in two main particle sizes:
3–5 mm: A medium-coarse grade suitable for lightweight concrete, insulating plaster, and horticultural applications requiring moderate drainage.
5–8 mm: A coarse grade suitable for loose-fill insulation, fireproofing, and horticultural applications requiring high drainage and aeration.
Primary Applications:
Lightweight Insulating Concrete: Coarse perlite is used as a lightweight aggregate in insulating concrete for roof decks, floor fills, and precast panels. The perlite reduces density, improves thermal insulation, and provides fire resistance.
Insulating Plaster and Render: Perlite is used in plaster and render for walls and ceilings, providing thermal and acoustic insulation while reducing weight.
Loose-Fill Insulation: Coarse perlite is used as loose-fill insulation in masonry blocks, cavity walls, and attics. It can be poured or blown into cavities, filling irregular spaces and providing effective thermal insulation.
Fireproofing: Perlite is used in fireproofing sprays, chimney fills, and fire-rated door cores. Its non-combustible nature and high melting point make it ideal for fire protection applications.
Horticulture: Coarse perlite is used as a growing medium component for orchids, succulents, and other plants requiring high drainage and aeration. It is also used in hydroponic systems and as a soil amendment for clay soils.
Foundry: Perlite is used in foundry applications for ladle topping and risering, where its insulating properties prevent shrinkage cavities in castings.
3. Physical Specifications Table
| Parameter | Specification |
|---|---|
| Product Name | Expanded Perlite Coarse Grade |
| Synonyms | Coarse Perlite, Construction Perlite |
| Appearance | White to light gray granules |
| Density | 0.08 – 0.12 g/cm³ |
| Particle Sizes | 3 – 5 mm, 5 – 8 mm |
| Melting Point | 1,100°C |
| Mohs Hardness | 5.5 – 7.0 |
| Thermal Conductivity | 360 W/m·K at 500°C |
| pH | 7.01 – 7.02 |
| Moisture Content | ≤ 1% |
| Fire Resistance | Non-combustible |
| Packaging | 50 L bags, 100 L bags, 1 m³ jumbo bags |
4. Chemical Specifications Table
| Component | Content (%) |
|---|---|
| SiO₂ (Silicon Dioxide) | 72 – 76 |
| Al₂O₃ (Aluminium Oxide) | 10 – 14 |
| Na₂O (Sodium Oxide) | 2.5 – 5 |
| K₂O (Potassium Oxide) | 2 – 5 |
| Fe₂O₃ (Iron Oxide) | 0.5 – 2 |
| CaO (Calcium Oxide) | 0.5 – 2 |
| Loss on Ignition (LOI) | 1 – 3% |
5. Industries & Factories Using This Product
Iranian expanded perlite coarse grade is used across a range of construction and horticultural industries, each with specific requirements for particle size and density.
Construction and Building Materials Industry: Construction companies use coarse perlite in lightweight insulating concrete for roof decks, floor fills, and precast panels. Producers of insulating plaster and render use perlite for walls and ceilings. Manufacturers of fire-rated door cores and ceiling tiles use perlite for its fire resistance. Producers of loose-fill insulation use perlite for masonry blocks, cavity walls, and attics. Manufacturers of fireproofing sprays and chimney fills use perlite for fire protection.
Horticulture and Landscaping Industry: Greenhouses and nurseries use coarse perlite for orchids, succulents, and other plants requiring high drainage. Landscapers use perlite for soil amendment in gardens and sports fields. Producers of potting mixes use coarse perlite for drainage-sensitive plants. Manufacturers of green roofs use perlite for lightweight growing media.
Foundry Industry: Foundries use coarse perlite for ladle topping to insulate molten metal and facilitate slag removal. Producers of castings use perlite in hot topping and risering to prevent shrinkage cavities.
Industrial Insulation Industry: Manufacturers of cryogenic insulation use perlite for LNG tanks and pipelines. Producers of high-temperature insulation use perlite for furnace linings and kiln insulation.
Wastewater Treatment Industry: Perlite is used as a filter medium in wastewater treatment plants for solids removal and turbidity reduction.
The Supply Chain Department at Sahi Rasa Company serves clients in all these industries, providing coarse perlite in the grade and packaging that best suits their needs.
6. Key Properties & Advantages
Iranian expanded perlite coarse grade offers several key properties that make it valuable in construction and horticultural applications.
Ultra-Low Density: With a density of 0.08–0.12 g/cm³, coarse perlite significantly reduces the weight of concrete, plaster, and growing media, lowering shipping costs and structural loads.
Excellent Thermal Insulation: Perlite's cellular structure traps air, providing outstanding thermal insulation. This reduces energy consumption in buildings and industrial processes.
Fire Resistance: Perlite is inorganic, non-combustible, and fire-resistant, making it ideal for fire-rated applications.
Superior Drainage and Aeration: The coarse particle size of 3–5 mm and 5–8 mm provides excellent drainage and aeration in growing media, preventing waterlogging and promoting healthy root development.
Chemical Inertness: Perlite is chemically inert and resistant to acids, alkalis, and solvents. It has a neutral pH, making it compatible with a wide range of plants and construction materials.
Rot-Proof and Durable: Perlite is inorganic and does not support mold, mildew, or bacterial growth. It is rot-proof and durable, ensuring long service life.
Competitive Pricing: Iran has abundant perlite reserves and efficient processing facilities, allowing the department to offer competitive pricing.
7. Chemical Formula / Size & Packaging Specifications
Chemical Formula: Amorphous volcanic glass, primarily SiO₂·nH₂O with Al₂O₃, Na₂O, K₂O, Fe₂O₃, and CaO.
CAS Number: 93763-70-3.
Packaging Options: 50 L woven bags, 100 L woven bags, 1 m³ jumbo bags, and custom packaging upon request.
8. Available Grades, Sizes, Qualities & Custom Colors
| Grade | Particle Size | Density | Typical Application |
|---|---|---|---|
| Coarse 3–5 mm | 3 – 5 mm | 0.08 – 0.12 g/cm³ | Lightweight concrete, horticulture |
| Coarse 5–8 mm | 5 – 8 mm | 0.08 – 0.12 g/cm³ | Loose-fill insulation, fireproofing |
Quality Grades: Construction Grade, Horticultural Grade, Insulation Grade. Custom Options: Custom particle sizes and packaging available.
9. Sahi Rasa Supply Chain Department Services for International Factories
The Supply Chain Department at Sahi Rasa Company offers a comprehensive suite of services for international factories procuring Iranian expanded perlite coarse grade.
Monthly & Weekly Supply Planning: The department aligns supply with client production schedules, ensuring that construction companies have perlite when they need it and horticultural growers have a steady supply.
Sourcing & Procurement: With access to multiple perlite producers, the department secures high-quality material at competitive prices.
Sample Dispatch: Samples are provided for testing and approval.
Custom Manufacturing (OEM/ODM): Custom particle sizes and packaging are available.
Pre-Shipment Quality Control: Density, particle size, thermal conductivity, and fire resistance are verified before shipment.
Loading & Handling: Proper loading and securing of low-density materials, with attention to volume optimization.
Export Documentation: Full export documentation support.
International Transportation: Sea, land, and air transport arranged, with a focus on cost-effective shipping.
Export Customs Clearance: Handled by customs brokers.
Import Customs Clearance: Can be arranged at destination.
On-Site Technical Team Deployment: Technical support for perlite handling and application.
Training & Knowledge Transfer: Training on the use of coarse perlite in construction and horticulture.
10. Why Choose the Supply Chain Department at Sahi Rasa Company?
The department offers high-quality coarse expanded perlite, consistent performance, competitive pricing, and reliable export services to clients in Afghanistan, Iraq, Kurdistan, Tajikistan, Uzbekistan, Armenia, Georgia, Turkey, and Syria.
11. Ordering & Contact Information
International customers can place orders through the Request for Quotation (RFQ) form located at the bottom of this page. The expert team at the Supply Chain Department at Sahi Rasa Company will respond to all inquiries as soon as possible, providing complete information on pricing, delivery schedules, shipping terms, and export documentation.
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